Spring-hinge.



F. BRUGKER. SPRING HINGE. APPLIOATION FILED JAN.16,1914.

Ll Patented Jan. 5, 1915.

FRANCIS BRUCKER, OF LANSING, MICHIGAN.

SPRING-HINGE.

Specification of Letters Patent.

Patented Jan. 5, 1915.,

Application filed. January 16, 1914. Serial No. 812,560.

To all whom t may concern Be it known that I, FRANCIS BRUCKER, a citizenof the United States, residing at Lansing, Michigan, have inventedcertain new and useful Improvements in Spring- I-Iinges, of which thefollowing is a specification.

My present invention relates' to improvements in double acting springhinges for doors and has, among others, for its objects to providevarious improved details of construction of advantage in the operationof the hinge.

The invention therefore includes the novel features of construction andarrangement and combination of parts hereinafter described andparticularly defined by the appended claims.

An embodiment of my invention is illustrated in the accompanyingdrawings, in which Figure l is a side elevation of a double actingspring hinge with the casing in section; Fig. 2 is a sectional plan.

Referring by reference characters to this drawing, the door is indicatedat 2 and the floor or base at 3. The frame which holds the working partsof the hinge comprises a bar 4 having one end turned downwardly, asindicated at l, and the other end turned upwardly at an angle ofapproximately 45, the latter being provided with holes for the receptionof screws for fastening the bar securely to the door. The spring 5 hasone end adapted to adjustably bear against the turned down end 4c, and Iprovide a double adjustment at this point, one longitudinal for varyingthe tension of the spring and the other lateral for bringing the doorinto exact alinement with the door casing. The adjustment of the tensionis effected by means of a nut 6 threaded on a screw 7 secured to saidend 4a. The lateral adjustment is secured by having the reduced end ofsaid screw passed through a laterally elongated slot l in said end 4a,and held in position by a clamp nut 8.

The hinge post 9 is of improved construction, and is made integral withthe base plate l0. This latter plate has formed integral therewith aflat-topped circular boss 10', upon the upper face of which rests thelower face of the plunger 11. This plunger has a shank l1a which extendsfor a suitable distance within the spring, and has side' recessedportions 11b designed to bear against curved wings 9a of the post 9. Thepost preferably has a bracing web 9b. The lower face of the head Il ofthe plunger rests on the upper face of the boss 10a, while its upperface bears against the under side of the bar 4. In order to reducefriction as the door swings, I provide on the top of the post a ballcarrier 12 having a ball race `for balls which bear against the underside of the bar 4l. The hinge is held to the base plate by a hinge pin13 which has its head countersunk in the boss 10, and its upper endprovided with a clamping nut 13a. The sides of the spring are ineased byornamental side plates 24C which overlap each other at the rear. As willbe seen from the drawings the plates cover the turned up end of theframe.

Having thus described my invention what I claim is r- 1. In a springhinge, a frame open at its lower side, a post with means for connectingit to the floor and having an enlarged base or boss with a fiat uppersurface, a pivot pin passing through the post and frame, and a springpressed shank guided between the boss and frame, and bearing against thepost.

2. A spring hinge comprising a stationary post, a frame pivotallyconnected thereto, a plunger bearing against the post, a spring bearingagainst the plunger at one end and against the frame at the other end,and means independent of the plunger for effecting lateral adjustment ofsaid other end of the spring.

In testimony whereof I affix my signature in presence of two witnesses.

FRANCIS BRUCKER.

Witnesses O. I). HARDY, DAN I-IELLER.

@optan of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

